It gave me a 4; I also noticed that all my errors were in the last spectrum. I wonder if eye fatigue is an issue with this? (…and color differentiation for different monitors probably also makes a difference.)

(… and tried it again, got 8; funny thing, tho; the errors I made moved to the right on that final graph; this time just two bands of four, where last time there were three bands of errors further to the left.)

I got a 3 when I did it earlier. Mind you, I was getting some optical effects that were likely neurological – oscillating colours (and that’s separate from the issue of viewing my monitor at slightly different angles).

I got a 16. My problem was in the blues. I imagine monitor has a lot to do with it – I’ll try it again tomorrow with my nice big screen at work on my lunch hour. Bruce, I also saw the oscillations – I think it’s an optical illusion that will happen because of the way they’re set up. More separation between the lines and bigger blocks might help.

That’s good, that nought is the best one can get. Well – where does that leave me from an age perspective, as my age range exceeds yours indeed. I did it on a 15inch laptop with no artificial lighting in the background. I don’t wear spectacles at all. I worked from the edges of both sides of each frame. I found that it helped enormously, as it gave me a cue, as to know how to proceed and end each frame. Hope that makes sense?

Interesting.
I got a 0 which apparently means my colour vision is good. I also enjoy painting and looking at Art – from the Impressionists onward, not the mud-coloured allegorical stuff. Now I’m wondering: do I enjoy colours because I see them well, or am I good at sorting hues because I spend time playing with colours?

That was really interesting. I had a lot of trouble at first, or felt like I did, when I was thinking, like, is that pinker or bluer? But I used to work with light color a lot (in theatre), and as soon as my brain switched to warmer/cooler it was pretty easy. (I got a 0.)

@psanity
Mostly I wasn’t really thinking about it. The warmer / cooler distinction doesn’t really work for the green-to-purple bit, as the coolest part is in the middle. I did find it strange that the brightness seemed to vary quite a bit – could be an effect of the screen of course.

If you have red-green color blindness, the most common kind, then colors from red to green will all look yellow. That’s the color vision that dogs have, like most other mammals. Many birds do us one better, by seeing in the near-ultraviolet.

I myself have composed Color-Blindness Simulators. I even have one that works on webpages, though it only works in recent versions of Firefox, and though it’s somewhat buggy. You load a webpage into it, and you can see what that page looks like to someone with deficient color vision. I also simulate dog vision in it.

27, which isn’t bad considering that I was diagnosed with a little colour insensitivity in the light red-green range, pretty bad since I make a career of art (I admit colour being one of my weak suits)